docs: def build_data_access(host, port, database_name, collection_name):
          """
          Create data access gateway.
  
          :param host: The database server to connect to.
          :type host: str
          :param port: Database port.
          :type port: int
          :param database_name: Database name.
          :type database_name: str
          :param collection_name: Name of the collection with Sacred runs.
          :type collection_name: str
          """
          return PyMongoDataAccess("mongodb://%s:%d" % (host, port),
                                   database_name, collection_name)